68582972521 has 8 divisors (see below), whose sum is σ = 78899617664. Its totient is φ = 58396096800.

The previous prime is 68582972509. The next prime is 68582972537. The reversal of 68582972521 is 12527928586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68582972521 - 2¹⁷ = 68582841449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68582972221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32441220 + ... + 32443333.

It is an arithmetic number, because the mean of its divisors is an integer number (9862452208).

Almost surely, 2^68582972521 is an apocalyptic number.

It is an amenable number.

68582972521 is a deficient number, since it is larger than the sum of its proper divisors (10316645143).

68582972521 is a wasteful number, since it uses less digits than its factorization.

68582972521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64884711.

The product of its digits is 4838400, while the sum is 55.

The spelling of 68582972521 in words is "sixty-eight billion, five hundred eighty-two million, nine hundred seventy-two thousand, five hundred twenty-one".